This is what the McLaren 675 "Longtail" will sound like

The 666-hp track-oriented special will have 40 percent more overall downforce.

We have another teaser of the 675LT that shows off a bit of the tail-end that's the focal point of this track-ready variant of the 650S. McLaren claims it will be the lightest, quickest, and most aero-optimized of the new range of Super Series cars. The longtail refers to the active aerobrake fitted to the 675LT, which will provide 40 percent more downforce overall.

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And we know more about how McLaren is producing those 666 hp. The 3.8-liter V8 has been redesigned with lighter weight in mind, including a new crossover exhaust system made of titanium. You can see the titanium exhaust tips peeking out below the airbrake. New turbos have also been fitted to increase performance. To prevent pointless wheelspin, the car controls torque delivery from a dead stop, limiting it to 443 lb-ft and slowly allowing peak torque delivery of 516 lb-ft at 5500-6500 RPM through each gearchange.

Wondering what the 3.8-liter sounds like breathing 666 hp worth of evil music through titanium pipes? Here you go: